Alright, I have read a few books:
Batman Vol 1: The Court of Owls: This book was extremely well done and is worthy of movie material. I await to see if the Court of Owls and their Talon assassins make an appearance in the next Batman movie. It will be nice to not have the Joker featured as the main villain for once in media (one of the reasons why i love Batman Begins). If you want a classic noir story, some high-tech gadgets, and see Batman lose his mind and become scared of owls, buy this book.
Superman | Braniac: Though no longer canon (what a shame), I read this so i could have an understanding of Braniac as I never really knew why the guy abducted cities and shrunk them for a collection. Well let me say, that if Braniac makes a movie appearance, it needs to be this variation, as he is cold and will stop at nothing to get what he wants, not to mention that Superman can barely fight him. With the last note, it was quite refreshing to see Superman on edge and using every ounce of his power to stop a foe that is so powerful and driven towards his goals (and a bit creepy I might add). The pace for this book was like an action-packed movie and moves very fast during the climax, and though it was turned into an animated movie just because of how good it is, I hear it's not as good as the book (what's new?). If you don't care for Superman, this is one of the few books you must get because he and the cast of characters are well developed.
Aquaman Vol 2: The Others: This follows Aquaman Vol 1: The Trench, in which Black Manta has returned from a past that the book explains; not to mention the book gives at least a little bit of a history for Aquaman as Vol 1: The Trench was very vague about his past. Basically, he has his own private rag-tag team of superheros called The Others and they must protect ancient relics, and he was a much darker person in the past. I will not say anymore (as that would lead to spoilers) other then I like the reasonable feud between Arthur Curry and Black Manta (name has yet to be revealed). This was better then Vol 1: The Trench IMO.
Aquaman Vol 3: Throne of Atlantis: If you have read the previous stories and thought Aquaman was pretty cool, then you will be amazed to find that he is just outright epic in the book. This graphic novel finally reveals just about everything with Aquaman's past, and formally introduces King Orm Marius of Atlantis (Arthur Curry's half-brother), or as the surface dweller's call him, "Ocean Master" (he has been mentioned a couple of time, but never seen). He wields the Crown of Oceans (allows him to control water to powerful degree) and the Trident of Storms (allows him to create hurricane, thunder storms, twisters (etc), and summon lightning bolts from his trident). I love the way Orm is shown to be a sincere antagonist, you understand where he coming from and how he must protect and avenge his people, but he must be stopped; I actually feel bad for him. Orm Marius is now one of my favorite DC antagonists . Aspects of this story will definitely be used on the upcoming Aquaman live-action film(s) (Zach Snyder has heavily hinted at it), and so I cannot wait to see that and the animated movie of Throne of Atlantis. From what I have heard, the animated movie for Throne of Atlantis is epic in action, but it tries to cram in the stories for the previous two Aquaman graphic novels with this one and thus loses the Shakespearean relationship between the half-brothers; I heard it can be a jumbled up unless you have read the original sources.
I was going to show a picture of from the GN, one of the most epic battle scenes from DC comics, but I'll let you decide if you want to buy the book (and it's predecessors), or just google it. instead, here is is an action packed rip form the Graphic Novel:
The Duel for the Throne of Atlantis:
*Orm yelling at Arthur as he continuously strikes at him with a bolt of lightning from his trident, all while a maelstrom pours and tremendous sea waves crash* The poison of the surface world has corrupted your mind! All my life I've wanted to save you Arthur. *grabs Arthur and hurls him through a few buildings* When I was a child, I was told stories of the terror that the air-breathers brought upon us. And when I learned I had an older brother trapped up here, I wept. *leaps before his fallen brother* For years, I begged the Atlantean Guard to bring you home, but they refused to venture to this world. Which is why I took the throne in the first place. *charges his trident of storms* I built up the Atllantean army so I could come here and find you myself. But you found Atlantis first. I wept again that day --- because I loved you as any brother should. *unleashes the full might of the surrounding maelstrom via lightning bolts upon his brother, frowning and eyes watering behind his goggled helmet-crown as it flashes in the light of the lightning*